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DefaultHandler Class Reference

Default base class for SAX2 handlers. More...

#include <DefaultHandler.hpp>

Inheritance diagram for DefaultHandler

[legend]Collaboration diagram for DefaultHandler:

[legend]List of all members.

Public Methods
Default handlers for the DocumentHandler interface
virtual void	characters ( const XMLCh* const chars , const unsigned int length )
	Receive notification of character data inside an element. More...
virtual void	endDocument ()
	Receive notification of the end of the document. More...
virtual void	endElement ( const XMLCh* const uri, const XMLCh* const localname, const XMLCh* const qname )
	Receive notification of the end of an element. More...
virtual void	ignorableWhitespace ( const XMLCh* const chars , const unsigned int length )
	Receive notification of ignorable whitespace in element content. More...
virtual void	processingInstruction ( const XMLCh* const target , const XMLCh* const data )
	Receive notification of a processing instruction. More...
virtual void	resetDocument ()
	Reset the Docuemnt object on its reuse. More...
Default implementation of DocumentHandler interface
virtual void	setDocumentLocator (const Locator* const locator)
	Receive a Locator object for document events. More...
virtual void	startDocument ()
	Receive notification of the beginning of the document. More...
virtual void	startElement ( const XMLCh* const uri, const XMLCh* const localname, const XMLCh* const qname , const Attributes& attrs )
	Receive notification of the start of an element. More...
virtual void	startPrefixMapping ( const XMLCh* const prefix, const XMLCh* const uri )
	Receive notification of the start of an namespace prefix mapping. More...
virtual void	endPrefixMapping ( const XMLCh* const prefix )
	Receive notification of the end of an namespace prefix mapping. More...
virtual void	skippedEntity ( const XMLCh* const name )
	Receive notification of a skipped entity. More...
Default implementation of the EntityResolver interface.
virtual InputSource*	resolveEntity ( const XMLCh* const publicId , const XMLCh* const systemId )
	Resolve an external entity. More...
Default implementation of the ErrorHandler interface
virtual void	error (const SAXParseException& exception)
	Receive notification of a recoverable parser error. More...
virtual void	fatalError (const SAXParseException& exception)
	Report a fatal XML parsing error. More...
virtual void	warning (const SAXParseException& exception)
	Receive notification of a parser warning. More...
virtual void	resetErrors ()
	Reset the Error handler object on its reuse. More...
Default implementation of DTDHandler interface.
virtual void	notationDecl ( const XMLCh* const name , const XMLCh* const publicId , const XMLCh* const systemId )
	Receive notification of a notation declaration. More...
virtual void	resetDocType ()
	Reset the DTD object on its reuse. More...
virtual void	unparsedEntityDecl ( const XMLCh* const name , const XMLCh* const publicId , const XMLCh* const systemId , const XMLCh* const notationName )
	Receive notification of an unparsed entity declaration. More...
Default implementation of LexicalHandler interface.
virtual void	comment ( const XMLCh* const chars , const unsigned int length )
	Receive notification of comments. More...
virtual void	endCDATA ()
	Receive notification of the end of a CDATA section. More...
virtual void	endDTD ()
	Receive notification of the end of the DTD declarations. More...
virtual void	endEntity (const XMLCh* const name)
	Receive notification of the end of an entity. More...
virtual void	startCDATA ()
	Receive notification of the start of a CDATA section. More...
virtual void	startDTD ( const XMLCh* const name , const XMLCh* const publicId , const XMLCh* const systemId )
	Receive notification of the start of the DTD declarations. More...
virtual void	startEntity (const XMLCh* const name)
	Receive notification of the start of an entity. More...

Detailed Description

Default base class for SAX2 handlers.

This class implements the default behaviour for four SAX2 interfaces: EntityResolver, DTDHandler, Sax2DocumentHandler, and ErrorHandler.

Application writers can extend this class when they need to implement only part of an interface; parser writers can instantiate this class to provide default handlers when the application has not supplied its own.

Note that the use of this class is optional.

See also:: EntityResolver::EntityResolver , DTDHandler::DTDHandler , ContentHandler::ContentHandler , ErrorHandler::ErrorHandler

Member Function Documentation

void DefaultHandler::characters ( const XMLCh *const chars,

const unsigned int length ) [virtual]

Receive notification of character data inside an element.

By default, do nothing. Application writers may override this method to take specific actions for each chunk of character data (such as adding the data to a node or buffer, or printing it to a file).
Parameters:

chars The characters.

length The number of characters to use from the character array.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::characters

Reimplemented from ContentHandler.

void DefaultHandler::comment ( const XMLCh *const chars,

const unsigned int length ) [virtual]

Receive notification of comments.

The Parser will call this method to report each occurence of a comment in the XML document.

The application must not attempt to read from the array outside of the specified range.
Parameters:

chars The characters from the XML document.

length The number of characters to read from the array.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from LexicalHandler.

void DefaultHandler::endCDATA ( ) [virtual]

Receive notification of the end of a CDATA section.

The SAX parser will invoke this method at the end of each CDATA parsed.
Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from LexicalHandler.

void DefaultHandler::endDTD ( ) [virtual]

Receive notification of the end of the DTD declarations.

The SAX parser will invoke this method at the end of the DTD
Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from LexicalHandler.

void DefaultHandler::endDocument ( ) [virtual]

Receive notification of the end of the document.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the beginning of a document (such as finalising a tree or closing an output file).
Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::endDocument

Reimplemented from ContentHandler.

void DefaultHandler::endElement ( const XMLCh *const uri,

const XMLCh *const localname,

const XMLCh *const qname ) [virtual]

Receive notification of the end of an element.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the end of each element (such as finalising a tree node or writing output to a file).
Parameters:

uri The URI of the asscioated namespace for this element

localname The local part of the element name

qname The QName of this element

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::endElement

Reimplemented from ContentHandler.

void DefaultHandler::endEntity ( const XMLCh *const name ) [virtual]

Receive notification of the end of an entity.

The SAX parser will invoke this method at the end of an entity
Parameters:

name The name of the entity that is ending.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from LexicalHandler.

void DefaultHandler::endPrefixMapping ( const XMLCh *const prefix ) [virtual]

Receive notification of the end of an namespace prefix mapping.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the end of each namespace prefix mapping.
NOTE : The current Implementation of SAX2Parser will _NEVER_ call this
Parameters:

prefix The namespace prefix used

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::endPrefixMapping

Reimplemented from ContentHandler.

void DefaultHandler::error ( const SAXParseException & exception ) [virtual]

Receive notification of a recoverable parser error.

The default implementation does nothing. Application writers may override this method in a subclass to take specific actions for each error, such as inserting the message in a log file or printing it to the console.
Parameters:

exception The warning information encoded as an exception.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
ErrorHandler::warning , SAXParseException::SAXParseException

Reimplemented from ErrorHandler.

void DefaultHandler::fatalError ( const SAXParseException & exception ) [virtual]

Report a fatal XML parsing error.

The default implementation throws a SAXParseException. Application writers may override this method in a subclass if they need to take specific actions for each fatal error (such as collecting all of the errors into a single report): in any case, the application must stop all regular processing when this method is invoked, since the document is no longer reliable, and the parser may no longer report parsing events.
Parameters:

e The error information encoded as an exception.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
ErrorHandler::fatalError , SAXParseException::SAXParseException

Reimplemented from ErrorHandler.

void DefaultHandler::ignorableWhitespace ( const XMLCh *const chars,

const unsigned int length ) [virtual]

Receive notification of ignorable whitespace in element content.

By default, do nothing. Application writers may override this method to take specific actions for each chunk of ignorable whitespace (such as adding data to a node or buffer, or printing it to a file).
Parameters:

chars The whitespace characters.

length The number of characters to use from the character array.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::ignorableWhitespace

Reimplemented from ContentHandler.

void DefaultHandler::notationDecl ( const XMLCh *const name,

const XMLCh *const publicId,

const XMLCh *const systemId ) [virtual]

Receive notification of a notation declaration.

By default, do nothing. Application writers may override this method in a subclass if they wish to keep track of the notations declared in a document.
Parameters:

name The notation name.

publicId The notation public identifier, or null if not available.

systemId The notation system identifier.

See also:
DTDHandler::notationDecl

Reimplemented from DTDHandler.

void DefaultHandler::processingInstruction ( const XMLCh *const target,

const XMLCh *const data ) [virtual]

Receive notification of a processing instruction.

By default, do nothing. Application writers may override this method in a subclass to take specific actions for each processing instruction, such as setting status variables or invoking other methods.
Parameters:

target The processing instruction target.

data The processing instruction data, or null if none is supplied.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::processingInstruction

Reimplemented from ContentHandler.

void DefaultHandler::resetDocType ( ) [virtual]

Reset the DTD object on its reuse.

See also:
DTDHandler::resetDocType

Reimplemented from DTDHandler.

void DefaultHandler::resetDocument ( ) [virtual]

Reset the Docuemnt object on its reuse.

See also:
DocumentHandler::resetDocument

void DefaultHandler::resetErrors ( ) [virtual]

Reset the Error handler object on its reuse.

See also:
ErrorHandler::resetErrors

Reimplemented from ErrorHandler.

InputSource * DefaultHandler::resolveEntity ( const XMLCh *const publicId,

const XMLCh *const systemId ) [virtual]

Resolve an external entity.

Always return null, so that the parser will use the system identifier provided in the XML document. This method implements the SAX default behaviour: application writers can override it in a subclass to do special translations such as catalog lookups or URI redirection.
Parameters:

publicId The public identifer, or null if none is available.

systemId The system identifier provided in the XML document.

Returns:
The new input source, or null to require the default behaviour.
Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
EntityResolver::resolveEntity

Reimplemented from EntityResolver.

void DefaultHandler::setDocumentLocator ( const Locator *const locator ) [virtual]

Receive a Locator object for document events.

By default, do nothing. Application writers may override this method in a subclass if they wish to store the locator for use with other document events.
Parameters:

locator A locator for all SAX document events.

See also:
DocumentHandler::setDocumentLocator , Locator

Reimplemented from ContentHandler.

void DefaultHandler::skippedEntity ( const XMLCh *const name ) [virtual]

Receive notification of a skipped entity.

The parser will invoke this method once for each entity skipped. All processors may skip external entities, depending on the values of the features:
http://xml.org/sax/features/external-general-entities
http://xml.org/sax/features/external-parameter-entities

Introduced with SAX2
Parameters:

name The name of the skipped entity. If it is a parameter entity, the name will begin with %, and if it is the external DTD subset, it will be the string [dtd].

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from ContentHandler.

void DefaultHandler::startCDATA ( ) [virtual]

Receive notification of the start of a CDATA section.

The SAX parser will invoke this method at the start of each CDATA parsed.
Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from LexicalHandler.

void DefaultHandler::startDTD ( const XMLCh *const name,

const XMLCh *const publicId,

const XMLCh *const systemId ) [virtual]

Receive notification of the start of the DTD declarations.

The SAX parser will invoke this method at the start of the DTD
Parameters:

name The document type name.

publicId The declared public identifier for the external DTD subset, or null if none was declared.

systemId The declared system identifier for the external DTD subset, or null if none was declared.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from LexicalHandler.

void DefaultHandler::startDocument ( ) [virtual]

Receive notification of the beginning of the document.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the beginning of a document (such as allocating the root node of a tree or creating an output file).
Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::startDocument

Reimplemented from ContentHandler.

void DefaultHandler::startElement ( const XMLCh *const uri,

const XMLCh *const localname,

const XMLCh *const qname,

const Attributes & attrs ) [virtual]

Receive notification of the start of an element.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the start of each element (such as allocating a new tree node or writing output to a file).
Parameters:

uri The URI of the asscioated namespace for this element

localname the local part of the element name

qname the QName of this element

attributes The specified or defaulted attributes.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::startElement

Reimplemented from ContentHandler.

void DefaultHandler::startEntity ( const XMLCh *const name ) [virtual]

Receive notification of the start of an entity.

The SAX parser will invoke this method at the start of an entity
Parameters:

name The name of the entity that is starting.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

Reimplemented from LexicalHandler.

void DefaultHandler::startPrefixMapping ( const XMLCh *const prefix,

const XMLCh *const uri ) [virtual]

Receive notification of the start of an namespace prefix mapping.

By default, do nothing. Application writers may override this method in a subclass to take specific actions at the start of each namespace prefix mapping.
NOTE : The current Implementation of SAX2Parser will _NEVER_ call this
Parameters:

prefix The namespace prefix used

uri The namespace URI used.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
DocumentHandler::startPrefixMapping

Reimplemented from ContentHandler.

void DefaultHandler::unparsedEntityDecl ( const XMLCh *const name,

const XMLCh *const publicId,

const XMLCh *const systemId,

const XMLCh *const notationName ) [virtual]

Receive notification of an unparsed entity declaration.

By default, do nothing. Application writers may override this method in a subclass to keep track of the unparsed entities declared in a document.
Parameters:

name The entity name.

publicId The entity public identifier, or null if not available.

systemId The entity system identifier.

notationName The name of the associated notation.

See also:
DTDHandler::unparsedEntityDecl

Reimplemented from DTDHandler.

void DefaultHandler::warning ( const SAXParseException & exception ) [virtual]

Receive notification of a parser warning.

The default implementation does nothing. Application writers may override this method in a subclass to take specific actions for each warning, such as inserting the message in a log file or printing it to the console.
Parameters:

e The warning information encoded as an exception.

Exceptions:

SAXException Any SAX exception, possibly wrapping another exception.

See also:
ErrorHandler::warning , SAXParseException::SAXParseException

Reimplemented from ErrorHandler.

The documentation for this class was generated from the following file:

DefaultHandler.hpp

DefaultHandler Class Reference

Public Methods

Detailed Description

Member Function Documentation